diff --git a/modules/productcomments/views/templates/hook/post-comment-modal.tpl b/modules/productcomments/views/templates/hook/post-comment-modal.tpl
index 9c2065253..9c6ed14cf 100644
--- a/modules/productcomments/views/templates/hook/post-comment-modal.tpl
+++ b/modules/productcomments/views/templates/hook/post-comment-modal.tpl
@@ -5,6 +5,8 @@
 
 <script type="text/javascript">
   var productCommentPostErrorMessage = '{l s='Sorry, your review cannot be posted.' d='Modules.Productcomments.Shop' js=1}';
+  var productCommentMandatoryMessage = '{l s='Please choose a rating for your review.' d='Modules.Productcomments.Shop' js=1}';
+  var ratingChosen = false;  
 </script>
 
 <div id="post-product-comment-modal" class="modal fade product-comment-modal" role="dialog" aria-hidden="true">